or other objects so that in notification mails, mails requesting approvals or links to jump from a Fiori UI to CRM WebClient UI the user can access the relevant business object directly.

What I'm trying to achieve and cannot figure out how is: I would like to scroll down automatically to a specific assignment block by adding #af234309e4 (hash/pound sign + some GUID of an assignment block) or #identifier (if there is a non-GUID identifier of assignment blocks) to the URL. Or some other way, it doesn't have to be via hash mark, adding another parameter with &...=... would of course also be fine.

Is there a way to do this so that the user won't have to scroll to the relevant assignment block?

Currently, we do not have any way to identify assignment blocks, so this is not supported. It would be a nice idea for you to submit to our Customer Influence Program: http://influence.sap.com/crm2017. Submissions are currently open for the new features that we will develop in 2017.